Stocks fell on the first trading day of the month and the quarter as a decline in Amazon shares put pressure on the broader tech sector on Monday.

The e-commerce giant’s stock fell after President Donald Trump tweeted on Saturday that Amazon was scamming the U.S. Postal Service, adding the service loses billions of dollars delivering packages for the e-commerce giant.

Amazon has been one of the best-performing stocks over the past year, rising nearly 64 percent in that time period.

Trade worries also remained after Trump linked his proposal to build a border wall between the U.S. and Mexico to ongoing NAFTA negotiations between the two countries.

The new bearish narrative is that tariffs implemented by the Trump administration will spur a global trade war that would spiral the world into a recession, said Nick Raich, CEO of The Earnings Scout.

As a patient, finding a doctor in-network on your health plan can make a big difference when it comes to out of pocket costs.

For insurers and the doctors they contract with, finding a better way to keep provider lists up to date, could make a big difference when it comes to administrative costs.

From the perspective of the provider organizations … (they) can work with up to dozens of insurance plans, and each of the plans are individually requesting or verifying the provider information, said Mike Jacobs, senior distinguished engineer with UnitedHealth Group’s Optum division.

The insurers will launch the new program this summer, along with Quest Diagnostics and health insurance consultants at Multiplan, to see whether they can cut costs by sharing data and reduce the administrative burden of keeping lists accurate.

Regulators at CMS, the Centers for Medicare and Medicaid Services, may start fining Medicare insurers up to $25,000 a day for inaccurate provider lists, so it’s a problem the industry is anxious to resolve for their doctors, their patients and their bottom lines.

Bitcoin News TLDR / Table of Contents

Students are setting up mining rigs in their college dorm rooms. The best part? The university foots the energy bill. But as affordable graphics cards become harder to come by, it may not be as easy to make a quick buck.

IBM has unveiled a new blockchain product that lets start-ups and developers build their own distributed ledger projects.

Different to the public blockchain network that underpins bitcoin, IBM’s technology only allows a certain number of trusted parties to access it.

IBM’s blockchain starter plan is currently in beta testing mode, and is free for developers to use until commercial release.

The new plan is perfect for pilot projects and early stage development work for those who want to build solutions on the IBM blockchain platform which currently has over 250 active blockchain networks, Marie Wieck, general manager of IBM Blockchain, told CNBC in an email on Wednesday.

Some big businesses are more at ease with the idea of permissioned blockchains like IBM’s as they are designed to be tamper proof and keep transaction data private.

About 5 percent of men between the ages of 50 and 59 have low levels of testosterone along with symptoms like loss of libido and sluggishness, according to a few small studies.

The Food and Drug Administration approves testosterone gels and shots only for men with levels under 300, including those who have diseases that cause hormone levels to plummet, such as a pituitary tumor or injury to the testicles.

The group stated that testosterone therapy should only be given for men who have proven low levels of testosterone and avoided in men who have had a stroke or heart attack within the last six months or who are at high risk for prostate cancer.

And just as there are things men can do to boost levels, there are activities that lower testosterone scores.

Dr. Bhasin said that the kind of training endured by special armed forces tough exercise, lack of sleep and food can cause testosterone to drop to the levels of men who have been castrated lower than 50.

Cboe Global Markets, the first to launch bitcoin futures, would like the Securities and Exchange Commission to allow cryptocurrency exchange-traded funds.

Cboe encourages the Commission to approach Cryptocurrency ETPs [exchange-traded products] holistically and from the same perspective that it has historically approached commodity-related ETPs, the derivatives exchange said Friday in a letter to the SEC, published online Monday.

The Commission should not stand in the way of such ETPs coming to market given Cboe’s arguments for addressing the SEC’s concerns, the letter said.

He said Cboe expects trading volumes in bitcoin futures markets to soon reach levels comparable to those of other commodity futures products at the time that they were included in ETPs.

Cboe became the first major exchange to launch bitcoin futures on Dec. 10 and applied later that month with the SEC to list six bitcoin-related exchange-traded funds.

In August 2016, a private jet linked to Russian oligarch Oleg Deripaska traveled from Moscow to Newark Liberty International Airport in Newark, New Jersey.

The jet arrived within hours of a meeting in nearby Manhattan between Paul Manafort, then chairman of Donald Trumps presidential campaign, and Konstantin Kilimnik.

Weeks earlier, Manafort had emailed his old associate and told him to extend an offer of private briefings to Deripaska, according to The Washington Post.

Congressional investigators looking into Russian meddling in the 2016 election are now probing the relationship between Manafort, Kilimnik, and Deripaska, according to two people familiar with the matter.

Kilimnik has been widely reported to be the unnamed person identified in court filings by special counsel Robert Mueller’s office this week as having ties to Russian intelligence a relationship Kilimnik has long denied.

Some crypto leaders are now organizing events, clubs and conferences to attract women to the industry.

Arianna Simpson, an early cryptocurrency investor, said the surge of interest in virtual currencies from male novices should remind women that it did not take expertise or a Ph.D. to thrive in the ecosystem.

Mr. Levin originally slated 86 men and one woman as speakers.

It just coincidentally happened that there were more men than women speakers, Mr. Levin said.

When others in the cryptocurrency industry realized the conferences after-party would be held at a strip club, they encouraged Mr. Levin to change locations.

Even though Nvidia’s stock has fallen under pressure for the chipmaker’s ties to cryptocurrency mining, Nvidia founder, President and CEO Jensen Huang doesn’t expect the crypto craze to die down anytime soon.

Huang admitted that Nvidia’s processors were the perfect vessels for employing the capabilities needed to mine cryptocurrencies like bitcoin.

The reason why cryptocurrency became such a popular thing on top of our GPUs is our GPUs is the world’s largest installed base of distributed supercomputing, Huang explained.

However, even with the crypto craze fueling GPU demand, Huang emphasized that it’s far from being a growth driver for Nvidia.

Gaming is a much bigger business, data center is a much bigger business, our professional graphics is a much bigger business and, of course, in the future, everything that moves will be autonomous and we’ll have autonomous capabilities and that’s going to be a much bigger market, Huang said.

Bitcoin dropped Thursday, bringing losses for the week so far to about 17 percent.

The largest digital currency by market capitalization fell 7.6 percent to a low of $7,331.52 before recovering to near $7,400, according to CoinDesk’s bitcoin price index.

Ethereum, the second largest cryptocurrency by market cap, declined 9.8 percent to near $402, its lowest since Nov. 30, according to CoinMarketCap.

Some analysts have expected selling in bitcoin and other cryptocurrencies to pick up towards the mid-April deadline to file U.S. taxes as first-time investors realized they needed cash to pay capital gains tax.

The latest decline in bitcoin also came as U.S. stocks tried to recoup some of the month’s losses.

Google stores your location (if you have location tracking turned on) every time you turn on your phone.

Click on this link to see your own data: creates an advertisement profile based on your information, including your location, gender, age, hobbies, career, interests, relationship status, possible weight (need to lose 10lb in one day?)

Click on this link to see your own data: stores all of your YouTube history, so they probably know whether youre going to be a parent soon, if youre a conservative, if youre a progressive, if youre Jewish, Christian, or Muslim, if youre feeling depressed or suicidal, if youre anorexic…

This link includes your bookmarks, emails, contacts, your Google Drive files, all of the above information, your YouTube videos, the photos youve taken on your phone, the businesses youve bought from, the products youve bought through Google … – – They also have data from your calendar, your Google hangout…

The data they collect includes tracking where you are, what applications you have installed, when you use them, what you use them for, access to your webcam and microphone at any time, your contacts, your emails, your calendar, your call history, the messages you send and receive, the files you…

During that period, technologists and corporate evangelists had stopped touting the qualities of bitcoin, turning instead to a technology that underpinned the cryptocurrency without being tainted by dodgy connections: blockchain.

Cryptocurrency units could be inscribed with additional information and transformed into tokens representing anything from diamonds to title deeds; in this way blockchains could be repurposed as devices to verify property rights, or track products as they changed hands throughout the supply chain.

A blockchain called Ethereum came to dominate the open-source landscape: launched in 2015 by Russian-Canadian programmer Vitalik Buterin, it allowed developers to code and run decentralised autonomous organisations applications selling their services in exchange for cryptocurrency, and self-managing themselves according tosets of automatically enforced rules dubbedsmart contracts.

More recently, during a talk in Barcelona, bitcoin developer and anarchist firebrand Amir Taaki proposed using blockchain technology for rerunning the Catalanindependence referendum online, a method which, he argued, would neutralise the repression of Spains central government.

Its blockchain, though, is to be very different from bitcoins or Ethereums public ledger: it will be a private, invitation-only network, run by the exchange in compliance with law and regulation.

U.S. securities regulators should not stand in the way of exchange-traded funds that hold cryptocurrencies like bitcoin from coming to the market as they are essentially the same as other ETFs that hold commodities, said exchange operator Cboe Global Markets.

THE great Sir Isaac Newton may have revolutionised our knowledge of the world but he still had his blind spots. He was sucked into the great mania of his day, the South Sea Bubble (pictured) and lost a lot of money. “I can calculate the motion of heavenly bodies but…

Cboe Global Markets, the first to launch bitcoin futures, would like the Securities and Exchange Commission to allow cryptocurrency exchange-traded funds.

Cboe encourages the Commission to approach Cryptocurrency ETPs [exchange-traded products] holistically and from the same perspective that it has historically approached commodity-related ETPs, the derivatives exchange said Friday in a letter to the SEC, published online Monday.

The Commission should not stand in the way of such ETPs coming to market given Cboe’s arguments for addressing the SEC’s concerns, the letter said.

He said Cboe expects trading volumes in bitcoin futures markets to soon reach levels comparable to those of other commodity futures products at the time that they were included in ETPs.

Cboe became the first major exchange to launch bitcoin futures on Dec. 10 and applied later that month with the SEC to list six bitcoin-related exchange-traded funds.

NEW YORK U.S. securities regulators should not stand in the way of exchange-traded funds that hold cryptocurrencies like bitcoin from coming to the market as they are essentially the same as other ETFs that hold commodities, said exchange operator Cboe Global Markets.

The U.S. Securities and Exchange Commission said in January that significant investor protection issues needed to be examined before bitcoin-based ETFs could be offered and it also had concerns around how the products would be priced, stored and safeguarded.

Cboe’s letter said the exchange believes that the vast majority of these concerns can be addressed within the existing framework for commodity-related funds related to valuation, liquidity, custody, arbitrage, and manipulation.

The March 23 letter was signed by Cboe President Chris Concannon.

Cboe believes ETFs would give investors a more transparent and accessible way to get exposure to cryptocurrencies than the spot market.

Perhaps the best way of understanding bitcoin is through a model of how bubbles operate.

The classic model, developed by Hyman Minsky and elaborated by Charles Kindleberger, a historian who studied bubbles, has five stages: displacement, boom, euphoria, financial distress and revulsion.

A boom then occurs and drags in more and more investors; at some stage, we reach euphoria, where the boom is widely known to the public and there is talk about those who made millions from the trade.

In the euphoria stage, people buy because others are buying and because they anticipate being able to sell quickly at a higher price.

Investors may well reflect that bitcoin had not become a means of exchange for day-to-day transactions, has not proved to be a reliable store of value and thanks to the proliferation of cryptocurrencies, does not really benefit from a limited supply.

Physical gold is coming to the digital gold rush known as blockchain technology and one company is working to ensure that it’s responsibly sourced.

That’s according to a U.S.-based financial technology company, Emergent Technology Holdings, that is hoping to digitally encode the gold supply chain using blockchain tech in the first half of this year.

The company is creating a digital token that it says will be backed fully by gold in the hopes of offering a way to trade the metal with greater liquidity, says Emergent’s chief commercial officer, Mitchell Davis.

By digitally recording each stage of the gold supply chain, the company is able to guarantee the provenance of each piece of the metal, certify that it’s responsibly sourced and check that it’s 99.99 percent pure.

This isn’t the only attempt at tracking gold on a blockchain, but the company said its approach is fundamentally different from what others have adopted so far in part because of its focus on responsibly sourced gold.

Cboe Global Markets, the first to launch bitcoin futures, would like the Securities and Exchange Commission to allow cryptocurrency exchange-traded funds.

Cboe encourages the Commission to approach Cryptocurrency ETPs [exchange-traded products] holistically and from the same perspective that it has historically approached commodity-related ETPs, the derivatives exchange said Friday in a letter to the SEC, published online Monday.

The Commission should not stand in the way of such ETPs coming to market given Cboe’s arguments for addressing the SEC’s concerns, the letter said.

He said Cboe expects trading volumes in bitcoin futures markets to soon reach levels comparable to those of other commodity futures products at the time that they were included in ETPs.

Cboe became the first major exchange to launch bitcoin futures on Dec. 10 and applied later that month with the SEC to list six bitcoin-related exchange-traded funds.

It’s down more than 42 percent year to date after starting this year above $13,000.

Twitter announced Monday it would ban advertising for cryptocurrencies, following similar bans by Google and Facebook to crack down on fraud in initial coin offerings.

Bitcoin prices fell earlier this year after news of similar announcements.

The digital currency dropped 12 percent in late January after Facebook, the world’s second-largest online ad provider, said it would ban all ads that promote cryptocurrencies to prevent the spread of what it called financial products and services frequently associated with misleading or deceptive promotional practices.

BITCOIN, Ethereum, XRP, Stellar, Cardano: the infant world of cryptocurrencies is already mind-bogglingly crowded. Amid the cacophony of blockchain-based would-be substitutes for official currencies, central banks from Singapore to Sweden have been pondering whether they should issue digital versions of their own money, too.

Jack Dorsey, the CEO of Twitter and Square, expects bitcoin to become the single global currency within the next decade, he told the Sunday Times newspaper.

Dorsey, a personal investor in bitcoin, expects the cryptocurrency to be used for simple things like coffee and said its ascendance to world’s currency will occur over 10 years, but it could go faster, the U.K.-based paper reported.

Square said in November that it would start enabling the buying and selling of bitcoin on its Cash app.

Dorsey is also an investor in a star-up called Lightning Labs, which is developing technology to make bitcoin faster and easier to use.

Dorsey told the Times that bitcoin is slow and it’s costly, but as more and more people have it, those things go away.

Google is looking at whether it can incorporate blockchain technology, its most senior advertising executive said Wednesday.

Sridhar Ramaswamy, Google’s senior vice president of ads and commerce, said the company was researching the technology, but had no official product announcements to make.

The core blockchain technology is not something that is super-scalable in terms of the sheer number of transactions it can run, he told an audience at the Advertising Week Europe conference in London, as part of a question-and-answer session on Wednesday.

Ramaswamy added that the frictionless nature of the technology has applications in money transfer.

The promise of blockchain of course is twofold: one is friction-free value transfer, you can think of it as money transfer working at scale with no friction and that can have an amazing effect on society, because it’s hard to move money.

Existing central-bank money comes in two flavours: notes and coins available to anyone; and reserve and settlement accounts open only to commercial banks, already in electronic form (though not based on blockchain) and used for interbank payments.

A CBDC open to all would in effect allow anyone to have an account at the central bank.

Should they bear interest, that would affect demand not only for CBDCs but also for cash, bank deposits and government bonds.

Banks may have little choice but to pass changes in the CBDC rate on to depositors.

In times of stress, depositors flee wobbly banks for safer homesand a CBDC would allow digital runs to the central bank.

THE great Sir Isaac Newton may have revolutionised our knowledge of the world but he still had his blind spots. He was sucked into the great mania of his day, the South Sea Bubble (pictured) and lost a lot of money. “I can calculate the motion of heavenly bodies but…

Perhaps the best way of understanding bitcoin is through a model of how bubbles operate.

The classic model, developed by Hyman Minsky and elaborated by Charles Kindleberger, a historian who studied bubbles, has five stages: displacement, boom, euphoria, financial distress and revulsion.

A boom then occurs and drags in more and more investors; at some stage, we reach euphoria, where the boom is widely known to the public and there is talk about those who made millions from the trade.

In the euphoria stage, people buy because others are buying and because they anticipate being able to sell quickly at a higher price.

Investors may well reflect that bitcoin had not become a means of exchange for day-to-day transactions, has not proved to be a reliable store of value and thanks to the proliferation of cryptocurrencies, does not really benefit from a limited supply.

Wild fluctuations in the value of digital currencies bitcoin surged from less than one dollar in 2010 to $997 at the start of the 2017 to nearly $20,000 before settling back to around $8,500 on Friday have exposed investors to tax bills the value of their coins may no longer…

One complication for crypto investors is that digital currencies that were, in part, devised to operate outside of government and banking industry oversight, are still of interest to the US tax authorities, who look at cryptocurrency as property and not currency.

Another source of confusion is that crypto-brokers are not required to issue 1099 disclosure forms the forms used by the IRS to report income other than wages, bonuses and tips on digital currencies, but individuals are still responsible for reporting gains.

IRS wanted information so they could enforce tax law on individuals.

So on one side, yeah, its been easy to avoid tax, but on the other its part of the crypto ethos of personal responsibility to own up to it, Perez says.

News that an influential bitcoin holder is taking a break from selling has added to a bullish case for the digital currency.

A trustee of defunct Tokyo bitcoin exchange Mt. Gox sold more than 35,000 bitcoin, worth about $400 million at the time, to pay off creditors, according to details of the sale published by a company trustee last week.

The exchange closed in 2014 and filed for bankruptcy after the theft of 850,000 bitcoin.

In order to liquidate Mt. Gox’s remaining 166,000 bitcoin, worth about $1.6 billion at Monday’s prices, lawyer and trustee Nobuaki Kobayashi said he still needs regulatory approval.

IBM has unveiled a new blockchain product that lets start-ups and developers build their own distributed ledger projects.

Different to the public blockchain network that underpins bitcoin, IBM’s technology only allows a certain number of trusted parties to access it.

IBM’s blockchain starter plan is currently in beta testing mode, and is free for developers to use until commercial release.

The new plan is perfect for pilot projects and early stage development work for those who want to build solutions on the IBM blockchain platform which currently has over 250 active blockchain networks, Marie Wieck, general manager of IBM Blockchain, told CNBC in an email on Wednesday.

Some big businesses are more at ease with the idea of permissioned blockchains like IBM’s as they are designed to be tamper proof and keep transaction data private.

Google is looking at whether it can incorporate blockchain technology, its most senior advertising executive said Wednesday.

Sridhar Ramaswamy, Google’s senior vice president of ads and commerce, said the company was researching the technology, but had no official product announcements to make.

The core blockchain technology is not something that is super-scalable in terms of the sheer number of transactions it can run, he told an audience at the Advertising Week Europe conference in London, as part of a question-and-answer session on Wednesday.

Ramaswamy added that the frictionless nature of the technology has applications in money transfer.

The promise of blockchain of course is twofold: one is friction-free value transfer, you can think of it as money transfer working at scale with no friction and that can have an amazing effect on society, because it’s hard to move money.